Why is gel electrophoresis so important when studying genetic variation?
A. Gel electrophoresis enables a scientist to
identify dominant and recessive traits.
B. Gel electrophoresis enables scientists to
identify proteins of different size or charge.
C. Gel electrophoresis enables scientists to
replicate a strand of DNA.
D. Gel electrophoresis enables a scientist to
link phenotype to genotype.
E. Gel electrophoresis enables a scientist to
sequence DNA.
B
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Children who have AIDS may have parents who have AIDS, but this is a result of viral infection, not inheritance of a mutation. This is an example of
A) Pleiotropy B) Phenocopy C) Codominance D) Genetic heterogeneity
Scorpion muscle contraction is fueled directly by energy derived from
a. lactic acid. b. ADP. c. ATP. d. ethanol.
Which of the following is part of the growth phase of
the male gametophyte generation? a. carpel b. anther c. pollen tube d. seed e. megaspore
In the laboratory, fruit flies (Drosophila) were artificially selected for the number of bristles on their bodies. One population (R) was selected for low numbers of bristles, a second population (S) for high numbers of bristles.In order for the scientists to artificially select Drosophila for their number of bristles,
A. genetic variation had to be present in the population. B. they had to study the population for millions of years. C. the number of bristles in each Drosophila had to be random. D. they had to induce mutations into their populations of Drosophila. E. dramatic mutations had to be produced by the selection.